Empirical Formula: C₇H₅NOS
Molecular Weight: 151.1857 g/mol
Index of Refraction: 1.66
Density: 1.367 g/cm³
Flash Point: 171.5 °C
Melting point: 137-140 °C(lit.)
Enthalpy of Vaporization: 62.95 kJ/mol
Boiling Point: 360 °C at 760 mmHg
Vapour Pressure: 1.1E-05 mmHg at 25 °C
Appearance: Off-white to light brown crystalline powder
Solubility: Soluble in organic solvents, alcohol and ether
Structure of 2-Benzothiazolol (CAS NO.934-34-9):
                  
Product Category of 2-Benzothiazolol (CAS NO.934-34-9): Benzothiazol;pharmacetical

 2-Benzothiazolol (CAS NO.934-34-9) can used as intermediate of the herbicide diclofop-methyl thiazole.

 2-Benzothiazolol (CAS NO.934-34-9) hasn't been listed as a carcinogen by NTP, IARC, ACGIH, or CA Prop 65.

Hazard Codes: Xn
Risk Statements: 20/21/22 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements: 36 
S36:Wear suitable protective clothing.

 2-Benzothiazolol , its cas register number is 934-34-9. It also can be called 1,3-Benzothiazol-2-ol ; 2-Hydroxybenzothiazole ; and Benzothiazol-2(3H)-one . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Then you have the ingesting of the product: Do not induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
In addition, 2-Benzothiazolol (CAS NO.934-34-9) could be stable under normal temperatures and pressures. It is not compatible with strong oxidizing agents, and you must not take it with incompatible materials. And also prevent it to broken down into hazardous decomposition products: irritating and toxic fumes and gases.